Product Description
The BOSCH In-Line Fuel Filter (0 450 904 058) is an original-equipment-quality primary fuel filtration component manufactured by Bosch (Trade Number: F 4058). Positioned directly within the low-pressure fuel supply line between the fuel tank and the carburettor or injection system, its primary operational function is to capture micro-particles of rust, dirt, scale, and water before they can enter the engine's fuel metering system. Utilizing a premium, high-density porous paper media element, it safeguards sensitive internal needle valves, jets, or low-pressure injectors from abrasive wear and clogging. Over thousands of miles of driving, trapped fuel contaminants gradually choke the internal filter element. This restriction drops the delivery pressure to the engine, resulting in common driveability issues including low-speed engine hesitation, reduced power under heavy load or high RPMs, rough idling, and hard cold-starting conditions.
Product Specifications
- Manufacturer: BOSCH
- Item Number: 0 450 904 058 (Short Code: F 4058)
- Product Condition: New
- Component Classification: Universal In-Line / Pipe Fuel Filter Core
- Filter Housing Material: Transparent, high-impact fuel-grade polymer
- Outer Diameter [mm]: 35
- Total Height [mm]: 105
- Inlet Port Connection [mm]: 6 / 8 (Features a stepped multi-diameter push-on barb)
- Outlet Port Connection [mm]: 6 / 8 (Features a stepped multi-diameter push-on barb)
- Internal Filtration Efficiency: Beta 75 rating down to approximately 22 microns
Vehicle Compatibility
This classic stepped-barb inline transparent filter geometry is one of the most widely adapted filtration designs in automotive history, commonly serving as factory standard equipment or low-pressure retrofits for classic carburetted and early mechanical injection vehicles spanning from the 1960s through the late 1990s:
| Car / Equipment Manufacturer | Common Model Applications & Variants | Fuel System Configuration | Production Era Range |
|---|---|---|---|
| Volkswagen / Audi Group (VAG) | Beetle, Super Beetle, Transporter T2/T3, Golf Mk1 & Mk2, Scirocco, Polo Mk2 | Carburetted Petrol / Early Low-Pressure Fuel lines | 1965 - 1992 |
| Ford of Europe | Fiesta Mk1/Mk2, Escort Mk1/Mk2/Mk3, Cortina, Capri, Transit Mk1/Mk2 | Kent Crossflow, Valencia, Pinto, and Essex Carburetted lines | 1968 - 1990 |
| Classic & Vintage Fleets | BMW 1602/2002, Lada Samara, Peugeot 205, Volvo 240, Land Rover Series/Classic | Universal low-pressure carburettor supply feeds | 1970 - 1995 |
| John Deere / Agricultural | Ride-on mowers, compact tractors, and small utility engines (Replaces factory codes AM116304, AM101126, GY20709) |
Gravity-fed and low-pressure mechanical pump configurations | All Years |
⚠️ Flow Direction & Fuel Line Clamp Warning: Installing an inline fuel filter backwards will quickly restrict fuel flow and can cause the internal paper element to collapse under pump pressure. Always check the exterior plastic casing for the embossed directional arrow and orient the filter so that the arrow points away from the fuel tank fuel line and directly toward the carburettor or fuel pump intake. Because this filter utilizes a stepped 6mm/8mm connector barb, make sure your fuel hose sits tight over the matching diameter step. **Never rely on old, stretched rubber fuel lines without clamps**; always secure both the inlet and outlet hoses with fresh metal fuel hose clips or ear-clamps to prevent highly dangerous fuel leaks over a hot engine block.
Original Equipment Manufacturer (OEM) Reference Numbers
This universal high-efficiency fuel line element cross-references directly with, or acts as a factory-correct swap for, the following original equipment listings and premium aftermarket entries:
- VAG (VW / AUDI): 803201511C, 803 201 511 C
- LAND ROVER: STC4202, PHB000450, PHB000450P
- JOHN DEERE: AM116304, AM38708, AM116178, M151868, MG269212, AM101126, GY20709, AM104639, AM107871, M128336
- MANN-FILTER (Interchange Reference): WK 31/2 (100), WK312
- MAHLE (Interchange Reference): KL 23 OF, KL13OF
- RIDEX (Interchange Reference): 9F0013
- HENGST FILTER (Interchange Reference): H101WK, 280200000
- CHAMPION (Interchange Reference): CFF100104